We analyzed this man-made obstruction of the epidural catheter and emphasized the position of the catheter into the connector must be checked first when the epidural catheter obstruction was present.

• 我们分析了此种人为导致导管阻塞的原因，并强调当发生硬脊膜外腔导管阻塞时，首先要做的步骤就是检查导管是否完全地置入导管接头内。